Table VI.F1 shows that the OASDI open-group unfunded obligation over the infinite horizon is $43.2 trillion in present value, which is $29.3 trillion larger than for the 75‑year period. The $29.3 trillion increment reflects a significant financing gap projected for OASDI for years after 2093 into perpetuity. Of course, the degree of uncertainty associated with estimates increases substantially for years further in the future.

To illustrate the magnitude of the projected infinite horizon shortfall, consider that it could be eliminated with additional revenue equivalent to an immediate increase in the combined payroll tax rate from 12.4 percent to about 16.7 percent,1 or with cost reductions equivalent to an immediate and permanent reduction in benefits for all current and future beneficiaries by about 25 percent.

Table VI.F2 separates the components of the infinite horizon unfunded obligation (with the exception of General Fund reimbursements) among past, current, and future participants. The table does not separate past General Fund reimbursements among participants because there is no clear basis for attributing the reimbursements across generations.